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Delete Cluster (delete_cluster.yaml)

delete_cluster.yaml is used to uninstall the entire Kubernetes cluster and its related components, supporting selective resource cleanup based on configuration.

Execution Flow

  1. Global Initialization

    • Execute the native/root role on all nodes.
    • Load the defaults role on all nodes.

  2. Uninstall Kubernetes and Container Runtime

    • For nodes in the k8s_cluster group, execute:
      • uninstall/kubernetes: Uninstall Kubernetes components.
      • uninstall/cri: Uninstall the container runtime (triggered only when delete.cri is true and the current node does not belong to the image_registry group).

  3. Clean Local DNS Configuration

    • Clean up locally-written DNS (hosts) marker segments on nodes to be uninstalled.
    • Triggered only when delete.dns is true.

  4. Uninstall etcd (external mode only)

    • Execute etcd/scaling_down for nodes in the etcd group.
    • Triggered only when delete.etcd is true and etcd.deployment_type is external.

  5. Uninstall Image Registry

    • Execute uninstall/image-registry for nodes in the image_registry group.
    • Triggered only when delete.image_registry is true.

Notes

  • Please confirm that important data has been backed up before deleting the cluster.
  • You can control whether to clean up corresponding resources through the delete configuration items (e.g. delete.cri, delete.etcd, delete.dns, delete.image_registry).